40 U. S. P. R. R. EXP. AND SURVEYS ZOOLOGY 47TH PARALLEL. 



SERICA McLeay. 



S. anthracina, ovata, nigra fere opaca, cyaneo-micans, clypeo punctate, valde marginato, 

 lateribus fere parallelis, ad apicem late emarginato, thorace brevi confertim punctate, antrorsum 

 valde angustato, lateribus rotundatis, elytris striatis, punctatis, ad apicem late truncatis. 

 Long. 25 *35. 



Oregon, Dr. Townsend and Col. McCall ; San Francisco, Mr. Child ; Sacramento, Mr. 

 Wittick. The small specimen is reddish brown, but is perhaps immature. 



CAMPTORHINA Kirby. 



C. serotina, oblonga, obscure ferruginea, capite punctate, margine reflexo, antico late biernar- 

 ginato ; thorace subtiliter punctato, linea dorsali fere laevi, convexo, lateribus valde rotundato, 

 elytris leviter sulcatis, sulcis confertim punctatis, interstitiis punctis paucis notatis, pygidio 

 confertim punctato. Long. 42. 



One specimen, Sacramento, collected by Mr. Wittick. Of the size and form of C. vespertina 

 Lee. (Serica vespertina Schonh. Camptorhina atricapilla Kirby,} but with the thorax finely 

 punctured, and the elytra less sulcate and less coarsely punctured. 



HOPLIA Illiger. 



H. irrorata, oblonga, nigra, squamulis griseis setisque intermixtis vestita, clypeo antice 

 truncate, thorace antrorsum angustato, lateribus valde rotundato pygidio abdomineque densius 

 squamosis, tibiis anticis bidentatis, tarsis anterioribus unguiculis fissis, interiore duplo breviore. 

 Long. -28. 



Oregon, Dr. Townsend ; California, Mr. Child. The antennae are 9-jointed. The elytra are 

 sometimes reddish brown. 



PLEOCOMA Lee. 1 



P. fimbriata, latiuscula, ovalis, parum convexa, nigra, nitida supra glabra, capite inter cornua 

 excavato laevi, occipite subtiliter rugose punctato, thorace latitudine fere triple breviorej an 

 trorsum valde angustato, lateribus rotundatis, parce punctulato, antice rnodice declivi, elytris 

 stria suturali, alterisque 8 per paria approximatis punctatis parum distinctis, interstitiis sat 

 dense punctatis ; ad marginem et subtus, dense et longe flavo-villosa. Long. 1.05. Tab. I, 

 fig. 13, (antenna 13a.) 



Mas capite antice in capite furcato protenso, vertice breviter cornuto. Lee. Proc. Acad. Nat. 

 Sc. 8. 



Antennae (maris) 11-articulatae, articulo 3io elongate, 4to intus, ad basin producto, 6-11 laminatis, clavam hepta- 

 phyllani formantibus. Maxillae et mandibulae invisae, minutae. 



On the eve of my departure from tbe country, perfect specimens of tbis most curious genus have arrived, but do not, in 

 the hasty manner in which I am obliged to study them, throw much light upon its affinities. Although agreeing with 

 Gcotrupidae in the eleven-jointed antennae, the form of the antennae is entirely anomalous in that and allied groups, and 

 the small size of the oral organs would seem to indicate a new group between Geotrupidae and Copridae. 



These specimens are much smaller than the other one, being only .8 of an inch long. The figure is made from the one 

 first obtained, but the antennae are supplied from the smaller specimens, those of the former being very imperfect, though 

 still sufficiently preserved to be correctly described in the text, having only four long leaves, and one short one in the 

 club. These differences may be sexual, at least no adequate specific difference on comparison, unless it be in the thorax&amp;gt; 

 which, in the large specimen, is very finely and sparsely punctured, while in the small ones it is quite densely punctured 

 and clothed sparsely with long hairs like those on the margin. 



